linux-kernel - Re: [PATCHv4 1/5] lib/genalloc.c: Add power aligned algorithm

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Message-ID: <20140703181059.GJ17372@arm.com>
Date:	Thu, 3 Jul 2014 19:10:59 +0100
From:	Will Deacon <will.deacon@....com>
To:	Laura Abbott <lauraa@...eaurora.org>
Cc:	Catalin Marinas <Catalin.Marinas@....com>,
	David Riley <davidriley@...omium.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Ritesh Harjain <ritesh.harjani@...il.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv4 1/5] lib/genalloc.c: Add power aligned algorithm

On Wed, Jul 02, 2014 at 07:03:34PM +0100, Laura Abbott wrote:
> 
> One of the more common algorithms used for allocation
> is to align the start address of the allocation to
> the order of size requested. Add this as an algorithm
> option for genalloc.
> 
> Signed-off-by: Laura Abbott <lauraa@...eaurora.org>
> ---
>  include/linux/genalloc.h |  4 ++++
>  lib/genalloc.c           | 20 ++++++++++++++++++++
>  2 files changed, 24 insertions(+)
> 
> diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
> index 1c2fdaa..3cd0934 100644
> --- a/include/linux/genalloc.h
> +++ b/include/linux/genalloc.h
> @@ -110,6 +110,10 @@ extern void gen_pool_set_algo(struct gen_pool *pool, genpool_algo_t algo,
>  extern unsigned long gen_pool_first_fit(unsigned long *map, unsigned long size,
>  		unsigned long start, unsigned int nr, void *data);
>  
> +extern unsigned long gen_pool_first_fit_order_align(unsigned long *map,
> +		unsigned long size, unsigned long start, unsigned int nr,
> +		void *data);
> +

You could also update gen_pool_first_fit to call this new function instead.

Anyway, that's up to you:

  Acked-by: Will Deacon <will.deacon@....com>

Will
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